On 8 October 2022, SCIENTIA SINICA Physica, Mechanica & Astronomica (SCPMA) published online a review entitled "Emerging theory and phenomena in A selective review" is published online in SCPMA. The article provides a comprehensive overview of the emerging theories and novel phenomena in thermal conduction in the last decade or so from the perspective of theoretical models and experimental advances.
The continuous miniaturization and integration of devices result in an escalated power density in electronic devices, which makes the manipulation and control of heat transport an important research topic in modern technology and industrial applications. Materials with high thermal conductivity can be used for heat dissipation in electronic devices, whereas thermoelectric materials pursue a low thermal conductivity. Thermal transport has been described on the basis of Fourier’s law. Interestingly, many novel thermal conduction phenomena in nanostructures that violate Fourier’s law have been observed in the past decades and have attracted considerable attention. For example, the anomalous heat conduction phenomenon is reported in silicon nanowires based on molecular dynamics simulation. This anomalous heat conduction leads to the peculiar size-dependent thermal transport in low-dimensional materials.
In recent decades, experimental, theoretical, and computational developments have promoted the understanding of nanoscale heat conduction. Recent advances in various interesting phonon phenomena, such as hydrodynamic phonon transport, coherent phonon transport, interfacial thermal transport, and phonon magnon interaction, have been reviewed. Moreover, emerging phonon phenomena similar to electron transport have been discovered, such as hydrodynamic phonon transport, phonon coherence, weak coupling, and topological and high-order anharmonicity of phonon. These novel phonon transport phenomena are active hot research topics and are developing rapidly, which have received considerable attention.
In this review article, we present state-of-the-art advances in several fascinating phonon transport phenomena. First, we summarize the recent progress on the wave nature of phonons, including phonon coherence and its effects on thermal conductivity and the topological properties of phonons. Then, we discuss the particle nature of phonons, including the weak coupling of phonons and the high-order phonon anharmonicity. Finally, we present the summary and a brief outlook. This review presents the advanced understanding of some emerging phonon phenomena in solid materials, which provides new opportunities for further advancement in a wide variety of applications.
The authors of this paper are Professor Jie Chen, Physical Science and Engineering of Tongji University and Center for Phononics and Thermal Energy Science,Professor Nuo Yang, Huazhong University of Science and Technology, Professor Xiaotian Wang, Southwest University, Professor Shengyuan A. Yang, Singapore University of Technology and Design,and Professor Gang Zhang, Institute of High Performance Computing, Agency for Science, Technology and Research. School of Physics Science and Engineering, Tongji University, is the first unit.
This work was supported by the National Natural Science Foundation of China, the Science and Technology Commission of Shanghai Municipality, and so on.
Link: https://link.springer.com/article/10.1007/s11433-022-1952-3
